整數(shù)中,不能被2整除的數(shù)是奇數(shù),在下面,有奇數(shù)的性質(zhì)：（1）奇數(shù)不會(huì)同時(shí)是偶數(shù)；兩個(gè)連續(xù)整數(shù)中必需有一個(gè)是奇數(shù)；（2）奇數(shù)個(gè)奇數(shù)和是奇數(shù)；（3）兩個(gè)奇數(shù)的差是偶數(shù)；一個(gè)奇數(shù)與一個(gè)偶數(shù)的差是奇數(shù)；（4）若a、b為整數(shù),則a+b與a-b有相同的奇數(shù)偶；（5）n個(gè)奇數(shù)的乘積是奇數(shù)；.(6)奇數(shù)*偶數(shù)=偶數(shù)補(bǔ)充回答完畢,